[Bug middle-end/23971] [4.0/4.1 Regression] synth_mult running amok

[kazu at gcc dot gnu dot org]

------- Additional Comments From kazu at gcc dot gnu dot org  2005-09-24 23:58 -------
(In reply to comment #12)
> It takes about 10 minutes to compile attached testcase with -O2 -mcpu=ev4 and
> about 2 minutes for -O2 -mcpu=ev5 (compiled on EV45 233Mhz).
> The difference is in cost of multiply op - 100 for ev4 and about 54 for ev5.

What gcc are you using?  Mainline with my patch on 2005-09-21?

I posted another one at

http://gcc.gnu.org/ml/gcc-patches/2005-09/msg01384.html

to further speed up synth_mult in expmed.c, so you might want to try that.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23971